Tentering-machine rail.



No. 679,797. Patented Aug. '6, l90l. I H. A. TILLINGHAST.

TENTEBING MACHINE BAIL.

(Application filed Dec. 31, 1900.)

(No Model.)

.INVENTUR:

En ATTY 'UNITED STATES PATENT OFFICE.

HENRY A. TILLINGHAST, OF PROVIDENCE, RlIODE ISLAND.

TENTERING-MACHINE RAILV SPECIFICATION forming part of Letters Patent, No. 679,797, dated August 6, 1901. Application filed December 31, 1900. Serial NQALMB- (NomodeL) To all whom it may concern.-

Be it known that I, HENRY A. TILLINGHAST, a citizen of the United States, residingin the city of Providence, county of Providence, and State of Rhode Island, have invented a new and useful Device for Varying the Amount of the Oscillations To and Fro of the Rails of Tentering-lvlachines, of which the following, :vith the accompanying drawings, is a descripion.

Figure 1 of the drawings is a plan view, and Fig. 2 a side elevation, showing sufficient portions of a tentering-machine to show my invention and how it is applied. Figs. 3, 4, and 5 show the details of my invention as I have heretofore applied it, Figs. 4 and 5 being upon a somewhat larger scale than the others.

A A represent the side rails of such a machine upon which the cloth runs, (not shown,) supported by transverse arms B B, pivoted upon the tops of the standards 0 O. This is the ordinary arrangement of such machines and permits the side rails to be swung or OS- cillated. D represents a transverse shaft also pivoted upon a portion of a standard 0 in the middle of the space between the rails, as at E. The shaft D is caused to swing about its central pivot E by the cams and connections between them and the shaft D. (Shown in Figs. 1 and 2.)

My invention consists inthe connections between the transverse shaft D and the rails A A and means for changing the position of these connections lengthwise of the shaft D, so that the side rails A A will be given a longer or shorter longitudinal movement, according as the position of the connection is nearer the end or middle of the shaft. The construction of the connection as I have heretofore made it is shown in the drawings and consists of a sleeve or collar F, Figs. 3 and 4, under each rail arranged to slide upon the shaft D and having an upwardly-projecting pin F, Fig. 4. Attached to each rail A is a piece G (shown most clearly in side elevation in Fig. 3 and in top plan with the rail above it removed in Fig. 4) and which has a slot, as shown, through it. The pin F of each sleeve or collar is arranged to pass through one of these slots, but is surrounded by a nut H, which also passes through the slot and in which the pin F turns freely. The head of the nut H is below the piece G, containing the slot, and the nut proper screws upon the thread out upon it above the slot, so that by sliding the sleeve F in or out upon the shaft D and tightening the nut H wherever wished in the slot the pointof connection between the swinging shaft D and the rails may be shifted and the amount of the oscillation given the rails varied, while the swing of the shaft itself remains the same. By lengthening the pieces G and the slots contained in them a larger amount of variation may be obtained than shown in the drawings; but in practice it is found that while it is very important to be able to obtain some variation the limits of variation are not required to be great.

It is evident that a connection between the shaft and one of the rails only would effect the oscillation of the entire machine; but it is much better in practice to have the connection with each rail, as shown and described.

What I claim is 1. In combination with the side rails of a tentering-machine mounted upon pivoted supports between them so that theymay oscillate to and fro in opposite directions, an oscillatory transverse shaft also mounted upon a pivot between the rails, and mechanism for swinging the shaft, of means for connecting the shaft with one of the rails and capable of being changed in position lengthwise of the shaft and transversely of the rail, and mechanism by which the connecting means may be firmly fixed in the varied positions as required Without interfering with the oscillations of the rails.

2. In combination with the side rails of a tentering-machine mounted upon pivoted supports between them so that they may oscillate to and fro in opposite directions, an oscillatory transverse shaft also mounted upon a pivot between the rails, and mechanism for swinging the shaft, of means for connecting the shaft with each rail and capable of being changed in position lengthwise of the shaft and transversely of the rail, and mechanism by which the connecting means maybe firmly fixed in the varied positions as required without interfering with the oscillations of the rails.

3. In combination with the side rails of a. carrying a pin, a piece upon each rail'having IO neutering-machine mounted upon pivoted a slot transverse to the rail through which supports between them so that said rails may the pin passes, and means surrounding the oscillate to and fro in opposite directions, an pins and capable of being firmly fixed in dif- 5 oscillating transverse shaft also mounted ferent portions of the slots.

upon a pivot between the rails, and mechan- HENRY A. TILLINGHAST. ism for swinging the shaft, of connections be- Witnesses: tween the shaft and each rail consisting of ANNIE A. WILLIS,

two pieces movable upon the shaft and each WM. R. TILLINGHAST. 

